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Finding the Fourth Proportional to 262,310.40, 393,465.60 and 72,770.40

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Solution

The fourth proportional to 262,310.40, 393,465.60 and 72,770.40 is: 109,155.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,310.40 : 393,465.60 = 72,770.40 : x
  2. Step 2: Convert to fraction form
    262,310.40/393,465.60 = 72,770.40/x
  3. Step 3: Cross multiply
    262,310.40x = 393,465.60 × 72,770.40
  4. Step 4: Simplify right side
    262,310.40x = 28,632,649,098.24
  5. Step 5: Solve for x
    x = 28,632,649,098.24/262,310.40
  6. Step 6: Final answer
    x = 109,155.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.